[ncl-talk] rainfall averaging

[Dennis Shea]

Hello,

Your email is being forwarded to 'wrfhelp at ucar.edu' They should best know
how to area weight the WRF output.

--

If your WRF file has a variable that indicates the area of each grid cell,
use

https://www.ncl.ucar.edu/Document/Functions/Built-in/wgt_areaave2.shtml

Examples 1 and, in particular, 3  may be helpful.

On Mon, Nov 17, 2014 at 2:41 AM, Geeta Geeta <geetag54 at yahoo.com> wrote:

>
> Hi all.
>
> I have to compute average rainfall over a box (say 10-20N/60-90E) from wrf
> output using the NCL script.
>
> I am also using MET software for verification, I converted the rainfall
> from wrfout files into netcdf files (I named them as model24_2011060100.nc)
> using the PCP_COMBINE tool model24_2011060100.nc file has ONLY rainfall
> data.
>
> Now my confusion is as follows.
>
> Do I have to use the  destaggering function for this data file before I
> calculate area average???.
> 1. I saw the ncl scripts that use the wrfout file directly.
>
> http://www2.mmm.ucar.edu/wrf/OnLineTutorial/Graphics/NCL/Examples/PRECIP/wrf_Precip.ncl
>
> 2. there is destaggering function
> http://www.ncl.ucar.edu/Document/Functions/WRF_arw/wrf_user_unstagger.shtml
>
>
> In anticipation ......................................
> geeta
>
>
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